You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract Advertisers Wary of Snapchat, But See Opportunity to Reach Teens Questions About Brand Safety, Reach and Targeting Abound By Cotton Delo, Published on November 15, 2013 2 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.